Date.prototype.format = function(format) {
		       var date = {
		              "M+": this.getMonth() + 1,
		              "d+": this.getDate(),
		              "h+": this.getHours(),
		              "m+": this.getMinutes(),
		              "s+": this.getSeconds(),
		              "q+": Math.floor((this.getMonth() + 3) / 3),
		              "S+": this.getMilliseconds()
		       };
		       if (/(y+)/i.test(format)) {
		              format = format.replace(RegExp.$1, (this.getFullYear() + '').substr(4 - RegExp.$1.length));
		       }
		       for (var k in date) {
		              if (new RegExp("(" + k + ")").test(format)) {
		                     format = format.replace(RegExp.$1, RegExp.$1.length == 1
		                            ? date[k] : ("00" + date[k]).substr(("" + date[k]).length));
		              }
		       }
		       return format;
		}